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Pentium Microprocessor
Module M20.1
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Intel Microprocessors
pin DIP (dual in-line package) pin PGA (pin grid array) 80386DX pin PGA 80486DX pin PGA The Pentium pin PGA The Pentium Pro pin PGA
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80486DX pin PGA
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Some Intel Microprocessors
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Some Motorola Microprocessors
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The Intel iCOMP Index
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The PC Memory Map
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The memory map of the TPA (Transient Program Area)
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System area of a typical PC
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The Pentium Pro Registers
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The EFLAG and FLAG Registers
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The Segment Register in the Protected Mode
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The Descriptor Formats
Base address = starting location of memory segment Limit = last offset address in segment G = granularity bit G = 0: Limit is length of 1 to 1M bytes G = 1: Limit is any multiple of 4K bytes Note: 220 x 4K = 220 x 212 = 232 = 4G bytes
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register
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The Access Rights Byte
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DS register accesses memory locations 100000H-1000FFH
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